Four-colour output
Black, white, red and yellow; the 10.2-inch panel also supports two grayscale levels.
Displays & HMI / Solution
E-Paper Display Solutions
Four-colour e-paper modules for smart badges, shelf labels and signage — from 1.54-inch NFC badges to a 10.2-inch SPI display.
Start a brief
01Overview
A portfolio of four-colour e-paper modules: compact NFC badges for events, name tags and wearables, plus a larger SPI display for shelf labels and industrial signage.
The 1.54–3.98-inch badge modules use SPI and NFC, with resolutions from 200 × 200 to 552 × 768. They are aimed at smart badges, event credentials, name tags and small labels; the image stays visible without power.
The 10.2-inch module provides 960 × 640 resolution, a 27-second full refresh, refresh power below 100 mW and sleep current below 0.01 µA. It uses 3-wire or 4-wire SPI and 3.3 V / 5 V logic, with support for Raspberry Pi, Jetson Nano, Arduino and STM32.
02Key features
What the product actually changes.
Each feature should map to a specification, a test or a documented application — not a generic marketing claim.
1.54–10.2 inch range
Badge modules from 1.54 to 3.98 inches, plus a 10.2-inch display for larger labels and signage.
NFC badge update
Compact badge modules combine SPI with NFC for phone-based content updates and event credentials.
Low power hold
The image remains visible without power; the 10.2-inch panel draws under 100 mW during refresh and under 0.01 µA in sleep.
High-resolution large panel
The 10.2-inch module offers 960 × 640 resolution, a 27-second full refresh and a viewing angle above 170°.
Controller support
3-wire or 4-wire SPI, 3.3 V / 5 V logic, and sample code for Raspberry Pi, Jetson Nano, Arduino and STM32.
03Working principle
How it works, stage by stage.
Content is sent by NFC or SPI, stored by the controller, and written to the e-paper panel; the image remains visible after power is removed.
- 01
Publish
The app, NFC phone or host controller prepares the four-colour image and template.
- 02
Transfer
Badge modules receive content over NFC or SPI; the 10.2-inch panel uses SPI from the host board.
- 03
Refresh
The driver applies the waveform and refreshes the panel; the 10.2-inch full refresh takes about 27 seconds.
- 04
Hold
The image stays on the display without power until the next update.
04Model selection
Specifications and model selection.
Compare the series against the requirement. Every value should state its unit and test condition.
Reference modules from the supplied product sheets. Panel variant, driver board and enclosure are confirmed per order.
| Model | Size | Resolution | Colours | Interface | Power |
|---|---|---|---|---|---|
| Badge 1.54 | 1.54 in | 200 × 200 | 4-colour | SPI + NFC | Battery |
| Badge 2.53 | 2.53 in | 425 × 425 | 4-colour | SPI + NFC | Battery |
| Badge 3.52 | 3.52 in | 240 × 360 | 4-colour | SPI + NFC | Battery |
| Badge 3.98 | 3.98 in | 552 × 768 | 4-colour | SPI + NFC | Battery |
| 10.2 E-Paper | 10.2 in | 960 × 640 | B/W/R/Y | SPI | 3.3 / 5 V DC |
- Badge modules: operating temperature 0–50 °C; CE marked; no touch function.
- 10.2-inch module: 224 × 157 × 1.0 mm; 27 s full refresh; <100 mW refresh; <0.01 µA sleep; >170° viewing angle.
- The 10.2-inch listing is supplied as a bare panel or with a driver board (e-Paper HAT).
- Final resolution, driver and enclosure are confirmed against the selected panel datasheet.
05Applications
Where it fits.
Add the operating requirement that makes this product a good match — not just an industry logo.
Smart badges
Event credentials, name tags and wearable badges updated by NFC or SPI.
Retail shelf labels
Price and promotion updates with an image that stays visible without power.
Room & industrial signs
Meeting-room signs, equipment labels and low-power status displays.
Accessories & packaging
Small four-colour displays for collectibles, packaging and creative products.
06Compliance & quality
Claims backed by documents.
Certificate scope and test reports are supplied on request. “Project-specific” means the standard is confirmed for the selected configuration; “pending” means it has not yet been verified for publication.
- CE / FCC / RoHSProject-specific
Design and documentation support; final scope depends on the radio module and enclosure.
- REACHProject-specific
Material declarations are collected from the selected panel and enclosure suppliers.
07Downloads
Take the documents with you.
Datasheets and drawings can be shared directly with your engineering and procurement teams.
08Related solutions
Next step
Need stock or a custom version?
Send the application, target volume and market for E-Paper Display Solutions. We will confirm stock availability or scope a custom build, with samples and a production plan.